Even if they are crosses (yellow + orange bhut), stable or not, you can stable them yourself, and in the end you might come across something that is really really fascinating.
It is all good and well collecting pure strain seeds and keeping them pure, but I for one am more interested in crossing just to see what I can get.
I understand the other side of the argument saying that they shouldn't really be selling them under those names if specifically not from those regions. As Potawie said they shouldn't use the parents name, but I would think even with habs that they were crossed, intentionally or not (naturally in the wild) yet we still all accept them as the same family, so to speak.
If the Yellow Naga looks, tastes, smells something like the original Nagas, with somewhere near the same heat level, then why not have it in the same family name?
People are assholes, if one person wants to call it a Yellow Naga, we can sit and complain all we want, but they are still going to call it what ever they want. But we will find out in a few months when the first of us grow them, and then, seeds for everyone and they loose money
FYI, a cute girl came up to me on the street and handed me a seed, I grew it and it turned out to be a pink bhut, I call it QTπ Bhut. Any takers? Pic included.